It's a horrible invasive and impossible to get rid of but I've got to give some love to Chinese privet. Evergreen, unkillable, and yields unlimited goat fodder year-round (they eat the leaves and the bark), attracts huge blackbird swarms, and the wood makes decent stakes for trellises and good
firewood. The white flowers are nice. And it's an excellent fast growing privacy hedge.
Hated it initially but I appreciate it now.
As for favorite, I love moringa. Pretty, vigorous and delicious greens right off the branch. I only wish it was cold hardier.